Sewing-machine for finishing buttonhole-pieces, &amp;c.



PATENTED JUNE 2, 1908.

. H. E. HILL. SEWING MACHINE FOR FINISHING BUTTONHOLE PIECES, 88.

APPLICATION FILED MAR. 26, 1908- 2 SHEETS-SHEET .1.

IE I: H

H. E. HILL.

SEWING. MACHINE FOR FINISHING BUTTONHOLE PIECES, 6w.- IAPPLIGATION FILEDMAR. 28, 1808.

PATENTED JUNE 2, 1908.

2 SHEETS-SHEET 2.

- U TED STATES PATENT OFFICE.

HERBERT E. HILL, OFHAVERHILL, MASSACHUSETTS, ASSIGNOR TO THE REEOE BUTTOHOLE MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

SEWING-MACHINE FOR IEIN'ISIHZIN'G BUTTONHOLE-PIEOES, &c.

I Patented June 2, 1908.

Application filed much 26, mos. Serial No. 423,326.

To all whom it may concern: 'Be it known that I, HERBERTE. HILL, acitizen of the United States, and resident of ,Haverhill, county ofEssex, State of Massachusetts, have invented an Improvement/inSewingeMachines' for Finishing Buttonhole? Pieces, &c tion, inconnection with the accompanying drawing, is a specification, likeletters on the drawing representing like parts. This invention relatesto sewing machin'es of the class wherein the work to be stitched is bentjust before it is tobe penetrated by the needle, in order that theneedle may enter and its noint emerge from the same side,

of the work to produce.'a blind stitch] Such a machine, adapted tostitch down the thrums in button-hole pieces for boots ,and shoes, formsthe subject-matter of United States Patent No. 404,863 granted June 11,1889 to John Reece. In said patent the work is intermittingly bent orpressed-into the grooveof a throat-plate by means of a verticallyreciprocated bendermounted on the overhanging arm of the machineadjacent the presserefoot, and operated by a cam and interveningconnections, an eye-pointed needle being reciprocated horlzontallytrans-- versely to the groove of the throat-plate, means being providedto impart to the needle a lateral motion in opposite directions at eachalternate thrust, feeding mechanism of the; usual four-motion typeserving to feed the work in the direction of the length of the needle. Y

My present inventionihas for one of its objects the simplification ofthe stitch-forming I I cation an particularly mechanism in a blindstitch machine, wherey the lateral vibration of the. needle-bar isobviated. 1

Another objectof the invention is to pro vide novel bending means forthe work, whereby the ov'erhangingarm .of the machine is dispensed withand t e movement-of the bender controlled by the feeding mechanism,acting in conjunction witha presser. 1

he varlous novel features of my-invention will be full described inthesubjo1nedspecifipointed out n the. following claims.

Figure 1 isya top plan portion of a sewing-m h f of which the followingdescriplarge scale through motion type,

view of a sufficient broken out; Fig. 3 is a view in elevation of thebender, bender-carrier and presser inf inoperative position; Fig. 4 isan underside view of part of-a button-hole piece, showing the thrumsstitched in place by the blind stitching; Fig. 5 is a sectional detailon a the work in the direction of feed, showin the bend and the needlesthrust therethrough; Fig. 6 is an under side view of the arts shown inFig. 5', illustrating the two nee les, and the shuttle-threadcoopcrating Withthe loops of needle-thread; Fig. -7 is asimilar view,but with the needles re tracted' from the work, and showing the twolines of stitches interlocked within the material at each side of thethrum-ends.

Referring to Figs. 1 and 2 the bed-plate A, the main shaft A driven inany usual manner and havin a disk I) secured to its front end, he cran-pin b on said disk, the link I) pivotally connected at' one end withthe crank-pin; the shuttle a, (see dotted lines Fi 1) the gatherinplategd for the thrumen s, mounted on t throatlate a secured tothe'bed-plate and having a transverse groove (1 into which the work-1sbent or ressed intermittingly, and the feed-bar dh' llaving the usualserrated surface to enga e the work and of the foureriving its motion inusual manner from cams on 'theshaft A may be e shuttle-cover dfl'the andare all substantially asin the Patent No.

404,863 above referred to, and operate as therein set forth, thefeed-motion cams being shown at b b by dotted lines Fig. 1.

Intaccordance with my present invention the needle-bar 1 is mounted toreciprocate horizontallyin bearings 2, 2 in ayoke-like frame 3 supportedat 4, 5, Fig. 2, in the' frame-work of EOSHJIOI} by a bar 6 securedfixedly to the amework of the base A v bycheck-nuts .7,

'.,Fig. -.1-. Agcollar Sfast .on the needle-bar is the machine andheldin fixed pivotallyqeonnected with the link b, whereby retation' of'thediskfN fleets longitudinal reli'eiptocatlon of the needle-bar m itsfixed Theinnenend of the needle-bar has a clampe in which are fixedlysecured f the shanks of two eye-pointed needles 10,

.referre placed side by side in parallelism with each other and with theneedlebar, said needles being reciprocated transversely to the groove ain the throat-plate, the latter being slotted for the assage. of theneedles, as in the patent d to. ',The' bevel-faced needle-guide bpivoted at b on the under side of the bedplate A, is upturned .into theslot, substantially as in said patent, and is acted upon by an arm 11having a s ring extension 12 adjustably held at 13, ig. 1, a leaf spring14 fast at one end on the under side of the arm 11 resting at its freeend on the cam-shaped periphery of the disk b an adjusting screw 15 onthe arrnll acting u on the free end of the spring above the dis As theneedle points move toward the work the needle- ;guide 6 is lifted andpresents its beveled face close to the needle path as the needles areabout to enter the work, so that the points of the needles cannot glanceoff the work, which at that time presents a convexed surface to theentering needles. As the latter penetratie the work the guide b isgradually lowere By. using twoneedles side by side, to simultaneouslyenter and leave the work, each needle carrying a thread, I dis, ensewith any lateral vibration of the need e-bar to cause entered by andinterlocked with the shuttle thread, and two lines of blind stitchingare the single needleto penetrate the work first on one and then on theother side of the thrum-ends, for with the two needles the loops ofneedle thread formed thereby are formed, as shown in Figs i, 6 and 7. Amuch higher speed can be obtained, for the needle movement isreciprocatory in the (h rection of the length of the needle-bar, only,

and a very positive action is also attained.

In Fig. 6 the loops 10 of needle-thread are entered by theshuttle-thread s, and as the needles 10 are retracted the loops 10 aredrawn back into the material, see dotted lines Fig. 7, interlockedwith'loo s 8X of the shuttle-thread, at opposite si es of thethrum-endst, the blin -stitches when completed showing only at the underside of the work w, substantially as illustrated in Fig4. As eachopposite .pair of interlocked loops is formed in the work theshuttle-thread crosses from one to the other line of stitch-' ing, as at8 securing the thruna-ends securely in lace.

lhe novel bender will .no'w' be deserihed,

and its manner of operation explained.

Upon the bed-plate A is secured by'scre'ws 1 16 a late having ears 17 toreceive a pin 18 on w ich is pivotally mounted a late 19 whlch I term abase, having a limite' rocking movement toward and from the bed plate A.on the pivot 18 at right angles to the l in needle-path, a latch 20pivoted on the bedplate being adapted to hold the base down against thebed-plate, as in Figs. 1 and 2, when said latch isin the position shownin said figures. The free end of the base has fulcrumed upon it at 21 abender-carrier 22,

shown ct-n-rly in plan, Fig. 1, and having rigidly attached to its freeend a lateral, cylindrical arm 23 which projects across the feed-bar dand has its end downturned to .form a bender. 24. 'Said bender islocated above the groove rain the throat-plate a,

t and is given a vertical reciprocating motion to intermittingly depressthe work into the groove, to form bends, as w therein, each bend beingformed just before the needles .10

are moved forward to enter the work. A strong leaf spring 25 is shown asfixedly secured to the top of the carrier 22-by screws '26, the free endof the spring bearing against the'top of thebase 19, the spring. beingso arched that its constanttendeney is to depress the free end of thecarrier when the base is held by the'latch 20 in its operative position,Figs. 1- and 2; When; the latch is swung around to release the base thetension of thespring is relaxed, and the base and carrier assume therelative positions shown 111 Fig. 3, and at such tlme the work can be 27is rotatably mounted on the arm 23 above the feed-bar (1 to travel onthe upper side,

of the work to, Fig. 2, when the work-is in position. Supposing the.parts to be in operatlve ressure o the spring 25 acts to depress the esend of thecarrier and thereby-the roll 2 7\ bearsfirmly upon the work,and when the feed-bar descends the bender 24 acts to press the workdowninto the. groove a of the throat-plata'to form the bend preparatoryto the 'forward stroke of theneedles. The needles and the oops 10areentered by the shuttleright, Fig. 2, whilein its lowered position andthen rising preparatory'to the work-feeding stroke to the left. When thefeedebar rises it acts through the intervening work upon thepresser'roll'27, lifting it and the carrier position, as in Figs. 1 and2, the

enetrate the work below the bender readily inserted or removed. Apresser roll thread 8, as in Fig. 6, and said needles are I thenwithdrawn, the feed-bar moving to the being depressed by the spring 25and elevated by the rise of the feed-bar 0Z This construction andarrangement does away with the overhanging arm for the bender andpresser, and eliminates the cam and inter vening devices for operatingthe bender, simplifying the construction and leaving the bed-plate clearfor free manipulation of the.

work, asthrbender-carrier and'itsl base 19 are located at asuIficient-distancefrom the presser and bender to admit various Widthsofwork. v

The descent of the bender is limited by adjustable stop-screws 28 whichare mounted on thelca'rrier 22 and engage the bed-plate whenthe spring25 is fre to act to depress the bender.

My invention is not restricted to a machine for finishing buttonholepieces, as will be manifest, -nor to 'the precise details of con-Vstruction and arrangement herem shown and described as the same may-bemodified or changed in different particulars without departing from thespirit and scopeof my invention as set forth in". the appended claims. I

. Having fully'described my invention, what I claim as new and desire tosecure by Letters Patent is I 1. The combination, with. a groovedthroat-plate, and'a bender to intermittingly bend the work into thegroove, of. stitchforming mechanism including two parallel,

eye-pointed needles, a horizontally recipro cating needle-bar on whichthe needles are mounted, and means to reciprocate the.

needle-bar, feeding mechanism acting in the direction of the length ofthe needles, and.

means governed by said feeding mechanism to effect the operation of thebender.

2. In a sewin -machine, means to inter mittingly form ends in the work,stitchforming mechanism including two parallel,

r eye-pointed needles, a needle-bar on which '45 needle-bar at ri htangles to the "bends formed in the wor and to thrust the needles intosuch bends, combined with feeding they, are mounted, fixed ,bearings forthe needle-bar, and means to reciprocatev the mechanism acting inthe'direction ofthe length of the needles, said feeding mech-' anismgoverning the operation of thebe'nding me ans.

3: In a sewing-machine, the'combination with a plate having a,(groove,and a ,bender en the Work: into vthe to intermitt-ingly groove, offeeding mechanism, ,means gov erned thereby toeifect the operation ofthe bender, and stitch-forming mechanism including two needles mountedside by side, and means toreciprocatefthe'm in a path transverse t0 theroove, to enterthe bends formed in the Wor I l v 4. In a sewing-machine,a grooved throatpiate, stitch-forming mechanism, including twoneedles'mounted side by side, means to reciprocate the needles in ahorizontal path transverse to the groove, a bender to intermittinglypressthe work into the groove, of

initting feed of thework, combined'with stitch-forming mechanism,including horizontally reciprocating needles to enter the bends formedin the work.

6. In a sewing-machine, a grooved throatplate, a bender tointermittingly depress the work into the carrier fulcrume adjacent the,throat plate, aspring acting upon the carrier to operatively depressthe bender upon the work,

'(groove, a. rocking bender-' feeding. mechanism, and means governedthereby to intermittingly lift the bender and its carrier-against theaction of (the spring. ,7.

-grooved throat plate, a rocking bendercarrier-fulcrumed adjacent thebed-plate, a

In a sewing-machine, a bed-plate, a I

laterally extendectarm on the free end of the j carrier, a downturnedbender on the arm above the groove in 'the" throat-plate, a spring ,todepress the carrier and bender, feeding mechanism, including afeed-bar,- and a presser roll rotatably mounted on the bender arm abovethe feed-bar, the latter acting through thework upon said ,roll tointermittingly liftqthe bender againstthe action of the'depressinspring;

8/ bender-carrier having a laterally, extended ips In asewing-mac ine,.abed-plate, a

arm provided with a dependingbender, a base fulcrumed onthe"bed-plateand piv-,

otally-connected with the carrier, a s ring fixed on the carrier andacting upon the ase, a latch to hold the basedown upon the bedplate, toflex the spring and depress the carrier and bendeiy' -a thr'oa't latehavir'ig a transverse groove beneath t e bender, de-

pression of thelatter pressingthe work into the groove, a feed-bar, andmeans governed bg movement thereof to intermitt ngly lift t ebender-carrier and bender. I

" 9. In a sewing-machine, a bed-plate, ,a'

grooved throatlate, feeding mechanism, inoludingxa ,fee -ba r adjacentthe throatplate, a rolling -presser above the feed-bar, a springdepressed support for the presser,

having an attachedbender above the groove.

in the throat-plate, and manually-controlled means to release thepresser and bender from na control of the spring and to place it undersuch control, the operation of the feed-bar acting through theinterposed workupon the presser and efi'ecting intermittent lifting ofthe bender against stress of the spring.

In testimony whereof, I have signed my me to this specification, in thepresence of tWo subscribing witnesses.

HERBERT E. HILL. Witnesses: I

THOMAS J. CARTY, .VVM. J. MGLAUGIILIN.

